* [Qemu-devel] [PATCH v3] Fix ATA SMART and CHECK POWER MODE @ 2011-02-09 22:12 Brian Wheeler 2011-02-09 23:22 ` Ryan Harper 0 siblings, 1 reply; 3+ messages in thread From: Brian Wheeler @ 2011-02-09 22:12 UTC (permalink / raw) To: qemu-devel This patch fixes two things: 1) CHECK POWER MODE The error return value wasn't always zero, so it would show up as offline. Error is now explicitly set to zero. 2) SMART The smart values that were returned were invalid and tools like skdump would not recognize that the smart data was actually valid and would dump weird output. The data has been fixed up and raw value support was added. Tools like skdump and palimpsest work as expected. v3 changes: don't reformat code I didn't change v2 changes: use single structure instead of one for thresholds and one for data. Signed-off-by: bdwheele@indiana.edu ---------------- diff --git a/hw/ide/core.c b/hw/ide/core.c index dd63664..b0b0b35 100644 --- a/hw/ide/core.c +++ b/hw/ide/core.c @@ -34,13 +34,26 @@ #include <hw/ide/internal.h> -static const int smart_attributes[][5] = { - /* id, flags, val, wrst, thrsh */ - { 0x01, 0x03, 0x64, 0x64, 0x06}, /* raw read */ - { 0x03, 0x03, 0x64, 0x64, 0x46}, /* spin up */ - { 0x04, 0x02, 0x64, 0x64, 0x14}, /* start stop count */ - { 0x05, 0x03, 0x64, 0x64, 0x36}, /* remapped sectors */ - { 0x00, 0x00, 0x00, 0x00, 0x00} +/* These values were taking from a running system, specifically a + Seagate ST3500418AS */ +static const int smart_attributes[][12] = { + /* id, flags, hflags, val, wrst, raw (6 bytes), threshold */ + /* raw read error rate*/ + { 0x01, 0x03, 0x00, 0x74, 0x63, 0x31, 0x6d, 0x3f, 0x0d, 0x00, 0x00, 0x06}, + /* spin up */ + { 0x03, 0x03, 0x00, 0x61, 0x61, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, + /* start stop count */ + { 0x04, 0x02, 0x00, 0x64, 0x64, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00, 0x14}, + /* remapped sectors */ + { 0x05, 0x03, 0x00, 0x64, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x24}, + /* power on hours */ + { 0x09, 0x03, 0x00, 0x61, 0x61, 0x68, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00}, + /* power cycle count */ + { 0x0c, 0x03, 0x00, 0x64, 0x64, 0x32, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, + /* airflow-temperature-celsius */ + { 190, 0x03, 0x00, 0x64, 0x64, 0x1f, 0x00, 0x16, 0x22, 0x00, 0x00, 0x32}, + /* end of list */ + { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00} }; /* XXX: DVDs that could fit on a CD will be reported as a CD */ @@ -1843,6 +1856,7 @@ void ide_exec_cmd(IDEBus *bus, uint32_t val) break; case WIN_CHECKPOWERMODE1: case WIN_CHECKPOWERMODE2: + s->error = 0; s->nsector = 0xff; /* device active or idle */ s->status = READY_STAT | SEEK_STAT; ide_set_irq(s->bus); @@ -2097,7 +2111,7 @@ void ide_exec_cmd(IDEBus *bus, uint32_t val) if (smart_attributes[n][0] == 0) break; s->io_buffer[2+0+(n*12)] = smart_attributes[n][0]; - s->io_buffer[2+1+(n*12)] = smart_attributes[n][4]; + s->io_buffer[2+1+(n*12)] = smart_attributes[n][11]; } for (n=0; n<511; n++) /* checksum */ s->io_buffer[511] += s->io_buffer[n]; @@ -2110,12 +2124,13 @@ void ide_exec_cmd(IDEBus *bus, uint32_t val) memset(s->io_buffer, 0, 0x200); s->io_buffer[0] = 0x01; /* smart struct version */ for (n=0; n<30; n++) { - if (smart_attributes[n][0] == 0) + if (smart_attributes[n][0] == 0) { break; - s->io_buffer[2+0+(n*12)] = smart_attributes[n][0]; - s->io_buffer[2+1+(n*12)] = smart_attributes[n][1]; - s->io_buffer[2+3+(n*12)] = smart_attributes[n][2]; - s->io_buffer[2+4+(n*12)] = smart_attributes[n][3]; + } + int i; + for(i = 0; i < 11; i++) { + s->io_buffer[2+i+(n*12)] = smart_attributes[n][i]; + } } s->io_buffer[362] = 0x02 | (s->smart_autosave?0x80:0x00); if (s->smart_selftest_count == 0) { ^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [Qemu-devel] [PATCH v3] Fix ATA SMART and CHECK POWER MODE 2011-02-09 22:12 [Qemu-devel] [PATCH v3] Fix ATA SMART and CHECK POWER MODE Brian Wheeler @ 2011-02-09 23:22 ` Ryan Harper 2011-02-10 14:28 ` Brian Wheeler 0 siblings, 1 reply; 3+ messages in thread From: Ryan Harper @ 2011-02-09 23:22 UTC (permalink / raw) To: Brian Wheeler; +Cc: qemu-devel * Brian Wheeler <bdwheele@indiana.edu> [2011-02-09 16:13]: > This patch fixes two things: > > 1) CHECK POWER MODE > > The error return value wasn't always zero, so it would show up as > offline. Error is now explicitly set to zero. > > 2) SMART > > The smart values that were returned were invalid and tools like skdump > would not recognize that the smart data was actually valid and would > dump weird output. The data has been fixed up and raw value support > was added. Tools like skdump and palimpsest work as expected. > > v3 changes: don't reformat code I didn't change > v2 changes: use single structure instead of one for thresholds and one > for data. > > Signed-off-by: bdwheele@indiana.edu > ---------------- > diff --git a/hw/ide/core.c b/hw/ide/core.c > index dd63664..b0b0b35 100644 > --- a/hw/ide/core.c > +++ b/hw/ide/core.c > @@ -34,13 +34,26 @@ > > #include <hw/ide/internal.h> > > -static const int smart_attributes[][5] = { > - /* id, flags, val, wrst, thrsh */ > - { 0x01, 0x03, 0x64, 0x64, 0x06}, /* raw read */ > - { 0x03, 0x03, 0x64, 0x64, 0x46}, /* spin up */ > - { 0x04, 0x02, 0x64, 0x64, 0x14}, /* start stop count */ > - { 0x05, 0x03, 0x64, 0x64, 0x36}, /* remapped sectors */ > - { 0x00, 0x00, 0x00, 0x00, 0x00} > +/* These values were taking from a running system, specifically a > + Seagate ST3500418AS */ These values ought to have meaning for your hardware, but won't for either the virtual disk, nor the underlying storage that the virtual disk is running on. Since we're not attempting to pass any of that info, nor keep it in-sync, it probably doesn't matter that much that we're just copying device specific data. I'm open to discussion on how much we care about the attribute values[1]. 1. https://secure.wikimedia.org/wikipedia/en/wiki/S.M.A.R.T.#ATA_S.M.A.R.T._attributes > +static const int smart_attributes[][12] = { > + /* id, flags, hflags, val, wrst, raw (6 bytes), threshold */ > + /* raw read error rate*/ > + { 0x01, 0x03, 0x00, 0x74, 0x63, 0x31, 0x6d, 0x3f, 0x0d, 0x00, 0x00, 0x06}, probably fine, but this is vendor hardware specific. I can't think of a better number other than 0. > + /* spin up */ > + { 0x03, 0x03, 0x00, 0x61, 0x61, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, default is probably fine as well, though it's dependent upon the hardware as well. Could be zero as well. > + /* start stop count */ > + { 0x04, 0x02, 0x00, 0x64, 0x64, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00, 0x14}, depends on hardware and power mgmt, any count is probably fine. > + /* remapped sectors */ > + { 0x05, 0x03, 0x00, 0x64, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x24}, Probably should be zero. > + /* power on hours */ > + { 0x09, 0x03, 0x00, 0x61, 0x61, 0x68, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00}, Zero. > + /* power cycle count */ > + { 0x0c, 0x03, 0x00, 0x64, 0x64, 0x32, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, Zero > + /* airflow-temperature-celsius */ > + { 190, 0x03, 0x00, 0x64, 0x64, 0x1f, 0x00, 0x16, 0x22, 0x00, 0x00, 0x32}, Something resonably ambient 20-30C, current value is probably fine. > + /* end of list */ > + { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00} > }; > > /* XXX: DVDs that could fit on a CD will be reported as a CD */ > @@ -1843,6 +1856,7 @@ void ide_exec_cmd(IDEBus *bus, uint32_t val) > break; > case WIN_CHECKPOWERMODE1: > case WIN_CHECKPOWERMODE2: > + s->error = 0; > s->nsector = 0xff; /* device active or idle */ > s->status = READY_STAT | SEEK_STAT; > ide_set_irq(s->bus); > @@ -2097,7 +2111,7 @@ void ide_exec_cmd(IDEBus *bus, uint32_t val) > if (smart_attributes[n][0] == 0) > break; > s->io_buffer[2+0+(n*12)] = smart_attributes[n][0]; > - s->io_buffer[2+1+(n*12)] = smart_attributes[n][4]; > + s->io_buffer[2+1+(n*12)] = smart_attributes[n][11]; > } > for (n=0; n<511; n++) /* checksum */ > s->io_buffer[511] += s->io_buffer[n]; > @@ -2110,12 +2124,13 @@ void ide_exec_cmd(IDEBus *bus, uint32_t val) > memset(s->io_buffer, 0, 0x200); > s->io_buffer[0] = 0x01; /* smart struct version */ > for (n=0; n<30; n++) { > - if (smart_attributes[n][0] == 0) > + if (smart_attributes[n][0] == 0) { > break; > - s->io_buffer[2+0+(n*12)] = smart_attributes[n][0]; > - s->io_buffer[2+1+(n*12)] = smart_attributes[n][1]; > - s->io_buffer[2+3+(n*12)] = smart_attributes[n][2]; > - s->io_buffer[2+4+(n*12)] = smart_attributes[n][3]; > + } > + int i; > + for(i = 0; i < 11; i++) { > + s->io_buffer[2+i+(n*12)] = smart_attributes[n][i]; Needs one more indent for s->io_b, per CODING_STYLE (4. Block structure) > + } > } > s->io_buffer[362] = 0x02 | (s->smart_autosave?0x80:0x00); > if (s->smart_selftest_count == 0) { > > -- Ryan Harper Software Engineer; Linux Technology Center IBM Corp., Austin, Tx ryanh@us.ibm.com ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Qemu-devel] [PATCH v3] Fix ATA SMART and CHECK POWER MODE 2011-02-09 23:22 ` Ryan Harper @ 2011-02-10 14:28 ` Brian Wheeler 0 siblings, 0 replies; 3+ messages in thread From: Brian Wheeler @ 2011-02-10 14:28 UTC (permalink / raw) To: Ryan Harper; +Cc: qemu-devel On Wed, 2011-02-09 at 17:22 -0600, Ryan Harper wrote: > * Brian Wheeler <bdwheele@indiana.edu> [2011-02-09 16:13]: > > This patch fixes two things: > > > > 1) CHECK POWER MODE > > > > The error return value wasn't always zero, so it would show up as > > offline. Error is now explicitly set to zero. > > > > 2) SMART > > > > The smart values that were returned were invalid and tools like skdump > > would not recognize that the smart data was actually valid and would > > dump weird output. The data has been fixed up and raw value support > > was added. Tools like skdump and palimpsest work as expected. > > > > v3 changes: don't reformat code I didn't change > > v2 changes: use single structure instead of one for thresholds and one > > for data. > > > > Signed-off-by: bdwheele@indiana.edu > > ---------------- > > diff --git a/hw/ide/core.c b/hw/ide/core.c > > index dd63664..b0b0b35 100644 > > --- a/hw/ide/core.c > > +++ b/hw/ide/core.c > > @@ -34,13 +34,26 @@ > > > > #include <hw/ide/internal.h> > > > > -static const int smart_attributes[][5] = { > > - /* id, flags, val, wrst, thrsh */ > > - { 0x01, 0x03, 0x64, 0x64, 0x06}, /* raw read */ > > - { 0x03, 0x03, 0x64, 0x64, 0x46}, /* spin up */ > > - { 0x04, 0x02, 0x64, 0x64, 0x14}, /* start stop count */ > > - { 0x05, 0x03, 0x64, 0x64, 0x36}, /* remapped sectors */ > > - { 0x00, 0x00, 0x00, 0x00, 0x00} > > +/* These values were taking from a running system, specifically a > > + Seagate ST3500418AS */ > > > These values ought to have meaning for your hardware, but won't for either the > virtual disk, nor the underlying storage that the virtual disk is > running on. Since we're not attempting to pass any of that info, nor > keep it in-sync, it probably doesn't matter that much that we're just > copying device specific data. I'm open to discussion on how much we > care about the attribute values[1]. > > 1. https://secure.wikimedia.org/wikipedia/en/wiki/S.M.A.R.T.#ATA_S.M.A.R.T._attributes > > The main reason for this patch was to make sure the disk tools and smartd on linux were happy and returned reasonable values. At some point I may add on the ability to trigger a smart failure (by jumping the sectors remapped or something) but for now its read only and not really meaningful. > > +static const int smart_attributes[][12] = { > > + /* id, flags, hflags, val, wrst, raw (6 bytes), threshold */ > > + /* raw read error rate*/ > > + { 0x01, 0x03, 0x00, 0x74, 0x63, 0x31, 0x6d, 0x3f, 0x0d, 0x00, 0x00, 0x06}, > > probably fine, but this is vendor hardware specific. I can't think of a > better number other than 0. > I've set it to zero. > > + /* spin up */ > > + { 0x03, 0x03, 0x00, 0x61, 0x61, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, > > default is probably fine as well, though it's dependent upon the > hardware as well. Could be zero as well. > I've set it to 16ms so skdump returns something other than 'n/a' > > + /* start stop count */ > > + { 0x04, 0x02, 0x00, 0x64, 0x64, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00, 0x14}, > > depends on hardware and power mgmt, any count is probably fine. > > > + /* remapped sectors */ > > + { 0x05, 0x03, 0x00, 0x64, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x24}, > > Probably should be zero. > When dumping it via skdump or smartctl out it reads as 0 sectors remapped (as indicated by the raw value). The value looks like its a countdown of sectors remaining, so setting it to the 'worst' value is equivalent to no sectors remapped. > > + /* power on hours */ > > + { 0x09, 0x03, 0x00, 0x61, 0x61, 0x68, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00}, > > Zero. > I'm going to set it to 1 (hour) so skdump returns something other than 'n/a' > > + /* power cycle count */ > > + { 0x0c, 0x03, 0x00, 0x64, 0x64, 0x32, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, > > Zero I've set it to zero. > > > + /* airflow-temperature-celsius */ > > + { 190, 0x03, 0x00, 0x64, 0x64, 0x1f, 0x00, 0x16, 0x22, 0x00, 0x00, 0x32}, > > Something resonably ambient 20-30C, current value is probably fine. > it reads at 31.0C. I've set the value (and worst)so it matches the raw value. (100C - 31C = 69C (0x45)). I've also adjusted the raw value so it shows the Min/Max is 31C > > + /* end of list */ > > + { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00} > > }; > > > > /* XXX: DVDs that could fit on a CD will be reported as a CD */ > > @@ -1843,6 +1856,7 @@ void ide_exec_cmd(IDEBus *bus, uint32_t val) > > break; > > case WIN_CHECKPOWERMODE1: > > case WIN_CHECKPOWERMODE2: > > + s->error = 0; > > s->nsector = 0xff; /* device active or idle */ > > s->status = READY_STAT | SEEK_STAT; > > ide_set_irq(s->bus); > > @@ -2097,7 +2111,7 @@ void ide_exec_cmd(IDEBus *bus, uint32_t val) > > if (smart_attributes[n][0] == 0) > > break; > > s->io_buffer[2+0+(n*12)] = smart_attributes[n][0]; > > - s->io_buffer[2+1+(n*12)] = smart_attributes[n][4]; > > + s->io_buffer[2+1+(n*12)] = smart_attributes[n][11]; > > } > > for (n=0; n<511; n++) /* checksum */ > > s->io_buffer[511] += s->io_buffer[n]; > > @@ -2110,12 +2124,13 @@ void ide_exec_cmd(IDEBus *bus, uint32_t val) > > memset(s->io_buffer, 0, 0x200); > > s->io_buffer[0] = 0x01; /* smart struct version */ > > for (n=0; n<30; n++) { > > - if (smart_attributes[n][0] == 0) > > + if (smart_attributes[n][0] == 0) { > > break; > > - s->io_buffer[2+0+(n*12)] = smart_attributes[n][0]; > > - s->io_buffer[2+1+(n*12)] = smart_attributes[n][1]; > > - s->io_buffer[2+3+(n*12)] = smart_attributes[n][2]; > > - s->io_buffer[2+4+(n*12)] = smart_attributes[n][3]; > > + } > > + int i; > > + for(i = 0; i < 11; i++) { > > + s->io_buffer[2+i+(n*12)] = smart_attributes[n][i]; > > Needs one more indent for s->io_b, per CODING_STYLE (4. Block structure) > OK > > + } > > } > > s->io_buffer[362] = 0x02 | (s->smart_autosave?0x80:0x00); > > if (s->smart_selftest_count == 0) { > > > > > I've normalized the Value/Worst at 100 (except for airflow). The new patch is forthcoming. Thanks for the feedback! Brian ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2011-02-10 14:28 UTC | newest] Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2011-02-09 22:12 [Qemu-devel] [PATCH v3] Fix ATA SMART and CHECK POWER MODE Brian Wheeler 2011-02-09 23:22 ` Ryan Harper 2011-02-10 14:28 ` Brian Wheeler
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